664820716022 has 8 divisors (see below), whose sum is σ = 998237364672. Its totient is φ = 332074927800.

The previous prime is 664820715959. The next prime is 664820716039. The reversal of 664820716022 is 220617028466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167712629 + ... + 167716592.

It is an arithmetic number, because the mean of its divisors is an integer number (124779670584).

Almost surely, 2^664820716022 is an apocalyptic number.

664820716022 is a deficient number, since it is larger than the sum of its proper divisors (333416648650).

664820716022 is a wasteful number, since it uses less digits than its factorization.

664820716022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335430214.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 664820716022 in words is "six hundred sixty-four billion, eight hundred twenty million, seven hundred sixteen thousand, twenty-two".